Question detail
Explain why metals that are more reactive than carbon cannot be extracted from their oxides using carbon reduction.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Reactivity of metals
Question
Explain why metals that are more reactive than carbon cannot be extracted from their oxides using carbon reduction.
Answer
Metals more reactive than carbon cannot be extracted from their oxides by carbon reduction because they have a stronger affinity for oxygen than carbon does. This means that when heated with carbon, these metals do not release from their oxides, as carbon cannot displace them from the oxide compound.
Explanation
This answer demonstrates an understanding of the reactivity series and the principles of reduction. It tests the student's ability to connect the reactivity of metals with their extraction methods.
Common mistake
Misunderstanding Reactivity and Extraction
Students often think that all metals can be extracted from their ores using carbon, regardless of their reactivity.
Remember that only metals less reactive than carbon can be extracted from their oxides by reduction with carbon. More reactive metals require different extraction methods.
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